Search Results - "Bylander, Jonas"

Decoherence benchmarking of superconducting qubits by Burnett, Jonathan J., Bengtsson, Andreas, Scigliuzzo, Marco, Niepce, David, Kudra, Marina, Delsing, Per, Bylander, Jonas

“…We benchmark the decoherence of superconducting transmon qubits to examine the temporal stability of energy relaxation, dephasing, and qubit transition…”
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Period multiplication in a parametrically driven superconducting resonator by Svensson, Ida-Maria, Bengtsson, Andreas, Bylander, Jonas, Shumeiko, Vitaly, Delsing, Per

“…We report on the experimental observation of period multiplication in parametrically driven tunable superconducting resonators. We modulate the magnetic flux…”
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Single-shot read-out of a superconducting qubit using a Josephson parametric oscillator by Krantz, Philip, Bengtsson, Andreas, Simoen, Michaël, Gustavsson, Simon, Shumeiko, Vitaly, Oliver, W. D., Wilson, C. M., Delsing, Per, Bylander, Jonas

“…We propose and demonstrate a read-out technique for a superconducting qubit by dispersively coupling it with a Josephson parametric oscillator. We employ a…”
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Observation of Broadband Entanglement in Microwave Radiation from a Single Time-Varying Boundary Condition by Schneider, B H, Bengtsson, A, Svensson, I M, Aref, T, Johansson, G, Bylander, Jonas, Delsing, P

“…Entangled pairs of microwave photons are commonly produced in the narrow frequency band of a resonator, which represents a modified vacuum density of states…”
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Rotating-frame relaxation as a noise spectrum analyser of a superconducting qubit undergoing driven evolution by Yan, Fei, Gustavsson, Simon, Bylander, Jonas, Jin, Xiaoyue, Yoshihara, Fumiki, Cory, David G., Nakamura, Yasunobu, Orlando, Terry P., Oliver, William D.

“…Gate operations in a quantum information processor are generally realized by tailoring specific periods of free and driven evolution of a quantum system…”
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Current measurement by real-time counting of single electrons by Bylander, Jonas, Duty, Tim, Delsing, Per

“…The fact that electrical current is carried by individual charges has been known for over 100 years, yet this discreteness has not been directly observed so…”
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Suppressing relaxation in superconducting qubits by quasiparticle pumping by Gustavsson, Simon, Yan, Fei, Catelani, Gianluigi, Bylander, Jonas, Kamal, Archana, Birenbaum, Jeffrey, Hover, David, Rosenberg, Danna, Samach, Gabriel, Sears, Adam P, Weber, Steven J, Yoder, Jonilyn L, Clarke, John, Kerman, Andrew J, Yoshihara, Fumiki, Nakamura, Yasunobu, Orlando, Terry P, Oliver, William D

“…Dynamical error suppression techniques are commonly used to improve coherence in quantum systems. They reduce dephasing errors by applying control pulses…”
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Three-wave mixing traveling-wave parametric amplifier with periodic variation of the circuit parameters by Fadavi Roudsari, Anita, Shiri, Daryoush, Renberg Nilsson, Hampus, Tancredi, Giovanna, Osman, Amr, Svensson, Ida-Maria, Kudra, Marina, Rommel, Marcus, Bylander, Jonas, Shumeiko, Vitaly, Delsing, Per

“…We report on the implementation of a near-quantum-limited, traveling-wave parametric amplifier that uses three-wave mixing (3WM). To favor amplification by…”
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Robust Preparation of Wigner-Negative States with Optimized SNAP-Displacement Sequences by Kudra, Marina, Kervinen, Mikael, Strandberg, Ingrid, Ahmed, Shahnawaz, Scigliuzzo, Marco, Osman, Amr, Lozano, Daniel Pérez, Tholén, Mats O., Borgani, Riccardo, Haviland, David B., Ferrini, Giulia, Bylander, Jonas, Kockum, Anton Frisk, Quijandría, Fernando, Delsing, Per, Gasparinetti, Simone

“…Hosting nonclassical states of light in three-dimensional microwave cavities has emerged as a promising paradigm for continuous-variable quantum information…”
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Fast Multiqubit Gates through Simultaneous Two-Qubit Gates by Gu, Xiu, Fernández-Pendás, Jorge, Vikstål, Pontus, Abad, Tahereh, Warren, Christopher, Bengtsson, Andreas, Tancredi, Giovanna, Shumeiko, Vitaly, Bylander, Jonas, Johansson, Göran, Kockum, Anton Frisk

“…Near-term quantum computers are limited by the decoherence of qubits to only being able to run low-depth quantum circuits with acceptable fidelity. This…”
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Transmon qubit readout fidelity at the threshold for quantum error correction without a quantum-limited amplifier by Chen, Liangyu, Li, Hang-Xi, Lu, Yong, Warren, Christopher W., Križan, Christian J., Kosen, Sandoko, Rommel, Marcus, Ahmed, Shahnawaz, Osman, Amr, Biznárová, Janka, Fadavi Roudsari, Anita, Lienhard, Benjamin, Caputo, Marco, Grigoras, Kestutis, Grönberg, Leif, Govenius, Joonas, Kockum, Anton Frisk, Delsing, Per, Bylander, Jonas, Tancredi, Giovanna

“…High-fidelity and rapid readout of a qubit state is key to quantum computing and communication, and it is a prerequisite for quantum error correction. We…”
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Spectroscopy of low-frequency noise and its temperature dependence in a superconducting qubit by Yan, Fei, Bylander, Jonas, Gustavsson, Simon, Yoshihara, Fumiki, Harrabi, Khalil, Cory, David G., Orlando, Terry P., Nakamura, Yasunobu, Tsai, Jaw-Shen, Oliver, William D.

“…We report a direct measurement of the low-frequency noise spectrum in a superconducting flux qubit. Our method uses the noise sensitivity of a free-induction…”
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Investigation of nonlinear effects in Josephson parametric oscillators used in circuit quantum electrodynamics by Krantz, Philip, Reshitnyk, Yarema, Wustmann, Waltraut, Bylander, Jonas, Gustavsson, Simon, Oliver, William D, Duty, Timothy, Shumeiko, Vitaly, Delsing, Per

“…We experimentally study the behavior of a parametrically pumped nonlinear oscillator, which is based on a superconducting λ 4 resonator, and is terminated by a…”
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Quantum efficiency, purity and stability of a tunable, narrowband microwave single-photon source by Lu, Yong, Bengtsson, Andreas, Burnett, Jonathan J., Suri, Baladitya, Sathyamoorthy, Sankar Raman, Nilsson, Hampus Renberg, Scigliuzzo, Marco, Bylander, Jonas, Johansson, Göran, Delsing, Per

“…We demonstrate an on-demand source of microwave single photons with 71–99% intrinsic quantum efficiency. The source is narrowband (300 kHz) and tuneable over a…”
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Mitigation of interfacial dielectric loss in aluminum-on-silicon superconducting qubits by Biznárová, Janka, Osman, Amr, Rehnman, Emil, Chayanun, Lert, Križan, Christian, Malmberg, Per, Rommel, Marcus, Warren, Christopher, Delsing, Per, Yurgens, August, Bylander, Jonas, Fadavi Roudsari, Anita

“…We demonstrate aluminum-on-silicon planar transmon qubits with time-averaged T 1 energy relaxation times of up to 270 μs, corresponding to Q = 5 million, and a…”
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Mitigation of frequency collisions in superconducting quantum processors by Osman, Amr, Fernández-Pendás, Jorge, Warren, Christopher, Kosen, Sandoko, Scigliuzzo, Marco, Frisk Kockum, Anton, Tancredi, Giovanna, Fadavi Roudsari, Anita, Bylander, Jonas

“…The reproducibility of qubit parameters is a challenge for scaling up superconducting quantum processors. Signal cross talk imposes constraints on the…”
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Extensive characterization and implementation of a family of three-qubit gates at the coherence limit by Warren, Christopher W., Fernández-Pendás, Jorge, Ahmed, Shahnawaz, Abad, Tahereh, Bengtsson, Andreas, Biznárová, Janka, Debnath, Kamanasish, Gu, Xiu, Križan, Christian, Osman, Amr, Fadavi Roudsari, Anita, Delsing, Per, Johansson, Göran, Frisk Kockum, Anton, Tancredi, Giovanna, Bylander, Jonas

“…While all quantum algorithms can be expressed in terms of single-qubit and two-qubit gates, more expressive gate sets can help reduce the algorithmic depth…”
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Improving Quantum Gate Fidelities by Using a Qubit to Measure Microwave Pulse Distortions by Gustavsson, Simon, Zwier, Olger, Bylander, Jonas, Yan, Fei, Yoshihara, Fumiki, Nakamura, Yasunobu, Orlando, Terry P., Oliver, William D.

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Signal Crosstalk in a Flip-Chip Quantum Processor by Kosen, Sandoko, Li, Hang-Xi, Rommel, Marcus, Rehammar, Robert, Caputo, Marco, Grönberg, Leif, Fernández-Pendás, Jorge, Kockum, Anton Frisk, Biznárová, Janka, Chen, Liangyu, Križan, Christian, Nylander, Andreas, Osman, Amr, Roudsari, Anita Fadavi, Shiri, Daryoush, Tancredi, Giovanna, Govenius, Joonas, Bylander, Jonas

“…Quantum processors require a signal-delivery architecture with high addressability (low crosstalk) to ensure high performance already at the scale of dozens of…”
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Experimentally Verified, Fast Analytic and Numerical Design of Superconducting Resonators in Flip-Chip Architectures by Li, Hang-Xi, Shiri, Daryoush, Kosen, Sandoko, Rommel, Marcus, Chayanun, Lert, Nylander, Andreas, Rehammar, Robert, Tancredi, Giovanna, Caputo, Marco, Grigoras, Kestutis, Gronberg, Leif, Govenius, Joonas, Bylander, Jonas

“…In superconducting quantum processors, the predictability of device parameters is of increasing importance as many labs scale up their systems to larger sizes…”
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